Area and perimeter of semicircles and quarter circles
7th grade (Year 8 in England) · 16 questions · Common Core: 7.G.B.4 · England: KS3 Geometry and measures, GCSE Foundation Geometry and measures
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Question 1
A window is a 10 dm by 10 dm rectangle with a semicircle on top (the semicircle's diameter is the 10 dm side). Find the total area of glass in dm², to 1 decimal place.
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Question 2
Find the area of a semicircle with radius 6 cm, to 1 decimal place.
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Question 3
A semicircle has diameter 20 cm. Find its perimeter (curved part + straight edge), to 1 decimal place.
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Question 4
A window is a 4 dm by 10 dm rectangle with a semicircle on top (the semicircle's diameter is the 4 dm side). Find the total area of glass in dm², to 1 decimal place.
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Question 5
Find the area of a semicircle with radius 4 cm, to 1 decimal place.
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Question 6
A semicircle has diameter 8 cm. Find its perimeter (curved part + straight edge), to 1 decimal place.
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Question 7
A window is a 12 dm by 11 dm rectangle with a semicircle on top (the semicircle's diameter is the 12 dm side). Find the total area of glass in dm², to 1 decimal place.
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Question 8
Find the area of a quarter circle with radius 2 cm, to 1 decimal place.
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Question 9
A semicircle has diameter 16 cm. Find its perimeter (curved part + straight edge), to 1 decimal place.
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Question 10
A window is a 12 dm by 11 dm rectangle with a semicircle on top (the semicircle's diameter is the 12 dm side). Find the total area of glass in dm², to 1 decimal place.
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Question 11
Find the area of a quarter circle with radius 5 cm, to 1 decimal place.
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Question 12
A semicircle has diameter 20 cm. Find its perimeter (curved part + straight edge), to 1 decimal place.
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Question 13
A window is a 8 dm by 4 dm rectangle with a semicircle on top (the semicircle's diameter is the 8 dm side). Find the total area of glass in dm², to 1 decimal place.
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Question 14
Find the area of a semicircle with radius 3 cm, to 1 decimal place.
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Question 15
A semicircle has diameter 10 cm. Find its perimeter (curved part + straight edge), to 1 decimal place.
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Question 16
A window is a 6 dm by 10 dm rectangle with a semicircle on top (the semicircle's diameter is the 6 dm side). Find the total area of glass in dm², to 1 decimal place.
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